/* --- Cấu trúc chung cho mọi công cụ --- */
.tool-wrapper {
    max-width: 800px;
    margin: 2rem auto;
    padding: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background-color: #f9f9f9;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.tool-wrapper h1 {
    font-size: 2em;
    text-align: center;
    margin-bottom: 0.5em;
    color: #333;
}

.tool-wrapper h2 {
    font-size: 1.5em;
    border-bottom: 2px solid #0073aa;
    padding-bottom: 5px;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    color: #222;
}

.tool-wrapper h3 {
    font-size: 1.2em;
    margin-top: 1.2em;
    margin-bottom: 0.5em;
    color: #444;
}

.tool-wrapper p, .tool-wrapper ul {
    line-height: 1.7;
    color: #555;
}

.tool-intro {
    text-align: justify; /* Căn đều 2 bên cho đoạn giới thiệu */
    font-size: 1.1em;
}

.tool-container {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    border: 1px solid #ccc;
    margin-top: 1em;
}

/* --- CSS riêng cho Công cụ đếm từ --- */
#word-counter-tool textarea {
    width: 100%;
    min-height: 200px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    resize: vertical;
    box-sizing: border-box; /* Quan trọng để padding không làm vỡ layout */
}

#word-counter-tool .results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* Responsive grid */
    gap: 10px;
    margin: 15px 0;
    padding: 10px;
    background-color: #f0f8ff;
    border-radius: 4px;
}

#word-counter-tool .results-grid div {
    font-size: 1em;
}

#word-counter-tool .results-grid span {
    font-weight: bold;
    color: #005a87;
}

#word-counter-tool button {
    background-color: #0073aa;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-right: 10px;
    margin-top: 10px;
    transition: background-color 0.3s;
}

#word-counter-tool button:hover {
    background-color: #005a87;
}

#word-counter-tool #clear-text-btn {
    background-color: #d9534f;
}

#word-counter-tool #clear-text-btn:hover {
    background-color: #c9302c;
}

/* --- CSS cho phần miễn trừ trách nhiệm --- */
.tool-disclaimer {
    margin-top: 2em;
    padding: 15px;
    background-color: #fff3cd;
    border-left: 5px solid #ffeeba;
    border-radius: 4px;
}

.tool-disclaimer h3 {
    margin-top: 0;
    color: #856404;
}
.tool-disclaimer ul {
    padding-left: 20px;
    margin-bottom: 0;
}

/* --- Tối ưu cho thiết bị di động --- */
@media (max-width: 600px) {
    .tool-wrapper {
        padding: 15px;
    }
    .tool-wrapper h1 {
        font-size: 1.8em;
    }
    #word-counter-tool .results-grid {
        grid-template-columns: 1fr; /* 1 cột trên mobile */
    }
    #word-counter-tool button {
        width: 100%;
        margin-right: 0;
    }
}